228670 has 16 divisors (see below), whose sum is σ = 443520. Its totient is φ = 84384.

The previous prime is 228647. The next prime is 228677. The reversal of 228670 is 76822.

228670 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228677) by changing a digit.

228670 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750 + ... + 1009.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2²²⁸⁶⁷⁰ is an apocalyptic number.

228670 is a deficient number, since it is larger than the sum of its proper divisors (214850).

228670 is a wasteful number, since it uses less digits than its factorization.

228670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 228670 is about 478.1945210895. The cubic root of 228670 is about 61.1509296663.

It can be divided in two parts, 228 and 670, that added together give a palindrome (898).

The spelling of 228670 in words is "two hundred twenty-eight thousand, six hundred seventy".